Or perhaps Valve has been working solidly on Half-Life 3 since 2007 and we're going to see a truly epic game, with mind-blowing graphics. And perhaps it will be entirely co-op, with some MMO elements. And perhaps they'll discount it and bundle it with other titles to create a follow-up to The Orange Box as a reward for fans.

Or perhaps they're sick of the Half-Life universe and have decided that making hats for TF2 is both more fun and more profitable.